今天想查询一条数据会用到另外一个数据库,想不切换数据库的情况下查询;
create public database link TEST_DBLINK
connect to alibaba identified by qwer1234
using '(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST =10.111.10.5)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME =orcl)
)
)'
;
DROP public DATABASE LINK TEST_DBLINK;
select * from t100_psn @TEST_DBLINK join t_visitplansId on pid = userno where userno='44140080600004';
图样图森破;
你学会了吗?